Linear DC2033A, Демонстрационное руководство

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6
dc2033af
DEMO MANUAL DC2033A
applications
Figure 6. An LT3972 5V at 3.5A Buck Regulator with LT6110 Circuit Compensating for the Drop of a 10ft, 24
AW
G Cable/Wire
IOUT
RF
A, RFB and RG
VALUES ARE FOR COMPENSA
TION OF
10ft, 24A
WG WIRE
AND 5V A
T 3.5A LOAD.
+IN
–IN
R
IN
866Ω
RJ10 0Ω
R
OUT
100Ω
R1 1k
RJ4 0Ω
RJ5 0Ω
E4 GND E2
LOAD
C2 0.1
µF
LT6110 V
+
V
–
RS
IMON
+
–
E3 GND E1
REGULA
TOR
E6 GND E5
VOUT
5V A
T 3.5A
I
LOAD
3.5A
I
LOAD 3.5A
RJ6 0Ω
DC2033 F06
R
SENSE
R
WIRE
24A
WG
10ft 0.25Ω
R
EXT
25mΩ
I
IOUT
E6
V
OUT2
E7 I
MON
E5
V
OUT1
R
MON
100Ω
EB
3× I
IOUT
E3 GND E9
SYNC
E9 VFB
E7
PGOOD
LOAD
47µF
V
LOAD
5V
3.5A
R
FA
9.53k R
FB
523k R
G
100k
C4
47pF
C5 0.1
µF
C4 47µF
R2
R2 AND R3 ARE REMOVED.
DC1458 TO DC2033 CONNECTIONS.
R3
C6 1000pF
JP2
1 2 3
BURST MODE
SYNC ON
R4 100k
R5 15k
C8 100pF
LT3972 BUCK REGULA
TOR
R1 63.4k
C1
0.47µF
D1
MBRA340T3
L1
6.8µH
C3 4.7µF
C2 22µF
BD BOOST SW VIN RUN/SS
RT VC
FB
PGOOD
SYNC
LT3972EMSE
GND
JP1
R6 100k
1 2 3 4
RUN
SHDN
EXTSS
+
C7 0.22µF
E1 VIN E8 GND E2 GND E4
EXTSS
DC1458A
LT6110 WIRE DROP COMPENSA
TOR
DC2033A
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Downloaded from
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